Have a look at this intriguing video, in which Gore-Tex product development expert Marc Peikert explains Gore-Tex Surround, a brand-new innovation which the company will introduce to walking shoes next spring.

The idea is that it's breathable all-round, rather than just through the upper � basically it carries heat away from the underside of the foot as well as the top side. Familiar brands that will be using it next spring include Mammut, Meindl, Zamberlan, Scarpa, La Sportiva, Hanwag and Salewa.

We're quite excited � it's a big promise that will potentially make a huge difference for those who find waterproof/breathable membranes run too hot for their liking.